<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="modelFlag==='login'?loginForm:registerForm" :rules="loginRules" class="login-form" auto-complete="on"
      label-position="left">

      <div class="title-container">
        <h3 class="title">单词管理后台系统</h3>
      </div>

      <div v-if="modelFlag === 'login'">
        <el-form-item prop="account">
          <span class="svg-container">
            <svg-icon icon-class="user" />
          </span>
          <el-input ref="account" v-model="loginForm.account" placeholder="登录凭证\账户\手机号\邮箱" name="account" type="text"
            tabindex="1" auto-complete="on" />
        </el-form-item>

        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input :key="passwordType" ref="password" v-model="loginForm.password" :type="passwordType"
            placeholder="登录秘钥" name="password" tabindex="2" auto-complete="on" @keyup.enter.native="handleLogin" />
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>

      </div>

      <div v-if="modelFlag === 'register'">
        <el-form-item label="用户名" prop="account">
          <el-input v-model="registerForm.account"></el-input>
        </el-form-item>

        <el-form-item label="密码" prop="password">
          <el-input type="password" v-model="registerForm.password"></el-input>
        </el-form-item>

        <el-form-item label="姓名" prop="name">
          <el-input v-model="registerForm.name"></el-input>
        </el-form-item>

        <el-form-item label="性别" prop="gender">
          <el-select v-model="registerForm.gender" placeholder="请选择性别">
            <el-option label="男" value="男"></el-option>
            <el-option label="女" value="女"></el-option>
          </el-select>
        </el-form-item>

        <el-form-item label="电话" prop="phone">
          <el-input v-model="registerForm.phone"></el-input>
        </el-form-item>

        <el-form-item label="编号" prop="code">
          <el-input v-model="registerForm.code"></el-input>
        </el-form-item>

      </div>

      <el-button v-if="modelFlag === 'login'" :loading="loading" type="primary" style="width:100%;margin-bottom:30px;"
        @click.native.prevent="handleLogin">登 录</el-button>
      <el-button v-if="modelFlag === 'register'" :loading="loading" type="primary"
        style="width:100%;margin-bottom:30px;" @click.native.prevent="handleRegister">注 册</el-button>
      <div class="tips">
        <span v-if="modelFlag === 'login'" style="cursor: pointer;" @click="modelFlag = 'register'">暂无账户？去注册</span>
        <span v-if="modelFlag === 'register'" style="cursor: pointer;" @click="modelFlag = 'login'">已有账户？去登录</span>
      </div>

    </el-form>
  </div>
</template>

<script>
import { validUsername } from '@/utils/validate'
import { register } from '@/api/user'
import { getPublicKey } from '@/api/commonApi'
import RsaUtil from '@/utils/rsa-util'

export default {
  name: 'Login',
  created() {
    getPublicKey().then(res => {
      this.publicKey = res
    })
  },
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error('请输入正确的用户名'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('密码不能少于6位'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        account: '',
        password: ''
      },
      publicKey: '',
      registerForm: {},
      loginRules: {
        account: [{ required: true, trigger: 'blur', validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }],
        name: [
          { required: true, message: '请输入姓名', trigger: 'blur' }
        ],
        gender: [
          { required: true, message: '请选择性别', trigger: 'change' }
        ],
        phone: [
          { required: true, message: '请输入电话', trigger: 'blur' }
        ],
        code: [
          { required: true, message: '请输入编号', trigger: 'blur' }
        ]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined,
      modelFlag: 'login'
    }
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          const rsa = new RsaUtil(this.publicKey)
          const loginForm = {}
          loginForm.password = rsa.encrypt(this.loginForm.password)
          loginForm.account = rsa.encrypt(this.loginForm.account)
          this.$store.dispatch('user/login', loginForm).then(() => {
            this.$router.push({ path: this.redirect || '/' })
            this.loading = false
          }).catch(() => {
            this.loading = false
          })
        } else {
          return false
        }
      })
    },
    handleRegister() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          register(this.registerForm).then(() => {
            this.$message.success('注册成功')
            this.loading = false
            this.$router.push('/')
          }).catch(() => {
            this.loading = false
          })
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
